Is your site readable by AI?
AI crawlers do not run JavaScript. They fetch your HTML and read what is in it. If your site paints its content in the browser, visitors see a full page and the crawler sees an empty box. This checks which one you are.
What the crawler actually gets.
We fetch your URL with no JavaScript, exactly like GPTBot or ClaudeBot, and measure the text that survives.
Vibe-coded sites are the usual suspects
Lovable, v0, Bolt and Create React App ship a client-only bundle by default. The HTML is an empty div and everything is drawn after load, so a crawler receives nothing.
You cannot see it from your browser
Your browser runs the JavaScript, so the page looks perfect to you. The only way to notice is to fetch the page the way a crawler does.
Nothing else works until this does
robots.txt, llms.txt, content, backlinks: all of it assumes the crawler can read your page. If it cannot, the rest is wasted effort.
- Move to a framework that renders on the server: Next.js, Nuxt, Astro, SvelteKit, or Remix.
- Already on Next.js? Check that your pages are not all marked "use client" with data fetched in useEffect.
- Static export or prerendering also works. What matters is that the HTML arrives with the content in it.